led Beer Mug Glass - Used In Party , 31st Night , Outing & tracking """"Hurry Up Limited Stock Available"""" Product Description Super eye catching LED lights Main switch on/ off control Secondary button on/ off control: Hold the mug up to flash, put it down to power off Detachable LED base, easy and convenient for cleaning and washing Perfect for drink competition, see who is the first to finish the drink and put down the mug to turn off the LED Guaranteed to build moods for your party Perfect decoration for your party, bar or wedding Size: Opening diameter 3.7" (9.5cm) / Height 4.9" (12.5cm) Capacity: 500ml Color: As shown in photos Material: Made of clear acrylic Battery included.